Question

Is there way to check whether the particular class members are null ?

I have a class with N number of properties (members). I got to create many Objects for the class and may assign the values for those properties.. I am using List to store all the objects.

Now, I want to check whether the object in particular index from the list has any of its property as null or not set ? Can this be accomplished without using loop or checking each property manually ?

Thanks in advance..

Answer 1

Assume you have a list of items of type A, listA. Below is a LINQ expression that will find all items in the list that have any property set to null:

var output = listA.Where(a => typeof (A).GetProperties()
                                        .Any(p => p.GetValue(a) == null))
            .Select((a, index) => index)
            .ToList();